铑催化的还原胺化合成一级胺

采用浸渍法制备Rh/CeO2催化剂。通过粉末X线衍射仪(XRD)、N2吸附-脱附分析、扫描电子显微镜(SEM)和透射电子显微镜(TEM)等对催化剂的性能进行表征。以苯甲醛和乙酸铵的还原胺化反应为模板反应,考察Rh/CeO2催化剂的催化性能。结果表明:Rh/CeO2催化剂具有多孔结构,且其在醛的还原胺化反应中表现出较高的活性和选择性。在反应温度为50℃、H2压力为0.1 MPa、乙醇作溶剂、n(乙酸铵)∶n(苯甲醛)∶n(Rh/CeO2)=50∶10∶0.1时,苯甲醛的转化率为100%,苄胺的产率为88%。催化剂重复使用5次后,依旧可以保持较高的催化活性。在优化条件下,系列苯甲醛均可选择性地还原胺化得到相应一级胺。     

新型含邻菲罗啉多胺配体的金属配合物稳定性研究

合成了含多胺的邻菲罗啉桥联配体（L），并在25℃，I=0.1mol/L KNO3的溶液中测量了其质子化常数，以及配体与二价过渡金属离子Cu(Ⅱ），Ni(Ⅱ),Co(Ⅱ),Zn(Ⅱ)和Mn（Ⅱ）的二元稳定常数。通过对配体与不同金属离子形成的配合物的稳定性比较发现，配位情况符合Irving-Williams序列。     

一些芳香族多胺的硅烷基化反应

本文以三甲基氯硅烷硅烷基化试剂，在三乙胺的存在下，于甲苯中回流，研究了一些芳香族多胺的硅烷基化反应。     

维甲酸类药物治疗顽固性扁平疣临床研究

46例顽固性扁平疣患者口服维甲酸衍生物维胺酯(三蕊胶囊),同时外用全反式维甲酸(0.1%迪维霜)治疗8周后,总有效率达95.65%,其中痊愈率达63.0%;本方法起效快,疗效确切,副作用较轻.     

电致初生态过氧化氨-鲁米诺化学发光测定联胺的体系研究

通过电化学还原溶解氧而产生初生态过氧化氢, 其与鲁米诺之间的弱化学发光信号强烈地受联胺的增敏, 由此建立了一种新的测定联胺的电化学发光分析新方法.结果表明,在0.1 mol/L Na2CO3溶液中,终止电位为-1.1V条件下, 体系的相对电化学发光强度与联胺的浓度在2.0×10-8～8.0×10-6g/mL范围内呈线性关系,测定的检出限为6.6×10-9g/mL,相关系数为0.999 0.     

HPLC法测定乌头须根中准格尔乌头胺和宋果灵的质量比

采用高效液相色谱法测定乌头须根中准格尔乌头胺和宋果灵两种生物碱类化合物的质量比.用Zorbax Extend-C18(4.6 mm×250 mm ODS,5μm)色谱柱,以V(甲醇)∶V(w(三乙胺)=0.1%)=6∶4为流动相,流速为1.0 mL/min,检测波长220nm,柱温25℃.结果表明:在选择的色谱条件下,两种生物碱类成分可实现基线分离,且线性范围宽(0.1~10.0μg),r2=0.999 8;平均加样回收率分别为99.8%和99.3%,相对标准偏差(RSD)分别为1.49%,1.46%(n=6),质量比分别为57.0,110.0μg/g.     

长链烷基多胺与镍（Ⅱ）在不同介质中的络合性能

研究了几种长链烷基多胺在不同介质中与镍（Ⅱ）的络合性能。结果表明，具有Ｎ２，Ｎ３，Ｎ４型烷基多胺均能在５％的ＯＰ－１０水溶液中与镍（Ⅱ）形成具有固定组成的稳定的络合物。     

电致初生态过氧化氢-鲁米诺化学发光测定联胺的体系研究

通过电化学还原溶解氧而产生初生态过氧化氢,其与鲁米诺之间的弱化学发光信号强烈地受联胺的增敏,由此建立了一种新的测定联胺的电化学发光分析新方法.结果表明,在0.1 mol/L Na2CO3溶液中,终止电位为-1.1V条件下,体系的相对电化学发光强度与联胺的浓度在2.0×10-8~8.0×10-6g/mL范围内呈线性关系,测定的检出限为6.6×10-9g/mL,相关系数为0.999 0.     

三聚氰胺甲醛树脂对金的吸附行为

研究了在不同酸性介质（硝酸、硫酸、盐酸）中，三聚氰胺甲醛树脂（蜜胺树脂）对金的吸附行为及其影响因素，结果表明，在酸性介质中，该树脂对金有较高的吸附率（达８０％以上）和好的选择性，并对其吸附机理进行了初步的探讨。     

LaNi5＋TiF0.9Mn0．1合金的贮氢性能

用冶炼法合成LaNi5＋TiFe0.5Mn0.1复合贮氢合金，研究了LaNi5＋TiF0.5，Mn0.1合金的贮氢性能。研究结果表明：由于TiFe.9Mn0.1合金的加入，可有效地降低LaNi5的平台压力；当TiFe0.5Mn0.1的质量分数为15％左右时，放氢曲线中出现两个平台；TiFe0.9Mn0.1的质量分数趋于25％时，它的平台压力又逐渐升高，贮氢量逐渐增大，温度升高则第二个平台消失，贮氢量降低。该合金适用于低温贮氢。     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.